git.oblomov.eu Git - linux-2.6/blob - drivers/infiniband/hw/mthca/mthca_cmd.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  *
  33  * $Id: mthca_cmd.c 1349 2004-12-16 21:09:43Z roland $
  34  */
  35
  36 #include <linux/sched.h>
  37 #include <linux/pci.h>
  38 #include <linux/errno.h>
  39 #include <asm/io.h>
  40 #include <ib_mad.h>
  41
  42 #include "mthca_dev.h"
  43 #include "mthca_config_reg.h"
  44 #include "mthca_cmd.h"
  45 #include "mthca_memfree.h"
  46
  47 #define CMD_POLL_TOKEN 0xffff
  48
  49 enum {
  50         HCR_IN_PARAM_OFFSET    = 0x00,
  51         HCR_IN_MODIFIER_OFFSET = 0x08,
  52         HCR_OUT_PARAM_OFFSET   = 0x0c,
  53         HCR_TOKEN_OFFSET       = 0x14,
  54         HCR_STATUS_OFFSET      = 0x18,
  55
  56         HCR_OPMOD_SHIFT        = 12,
  57         HCA_E_BIT              = 22,
  58         HCR_GO_BIT             = 23
  59 };
  60
  61 enum {
  62         /* initialization and general commands */
  63         CMD_SYS_EN          = 0x1,
  64         CMD_SYS_DIS         = 0x2,
  65         CMD_MAP_FA          = 0xfff,
  66         CMD_UNMAP_FA        = 0xffe,
  67         CMD_RUN_FW          = 0xff6,
  68         CMD_MOD_STAT_CFG    = 0x34,
  69         CMD_QUERY_DEV_LIM   = 0x3,
  70         CMD_QUERY_FW        = 0x4,
  71         CMD_ENABLE_LAM      = 0xff8,
  72         CMD_DISABLE_LAM     = 0xff7,
  73         CMD_QUERY_DDR       = 0x5,
  74         CMD_QUERY_ADAPTER   = 0x6,
  75         CMD_INIT_HCA        = 0x7,
  76         CMD_CLOSE_HCA       = 0x8,
  77         CMD_INIT_IB         = 0x9,
  78         CMD_CLOSE_IB        = 0xa,
  79         CMD_QUERY_HCA       = 0xb,
  80         CMD_SET_IB          = 0xc,
  81         CMD_ACCESS_DDR      = 0x2e,
  82         CMD_MAP_ICM         = 0xffa,
  83         CMD_UNMAP_ICM       = 0xff9,
  84         CMD_MAP_ICM_AUX     = 0xffc,
  85         CMD_UNMAP_ICM_AUX   = 0xffb,
  86         CMD_SET_ICM_SIZE    = 0xffd,
  87
  88         /* TPT commands */
  89         CMD_SW2HW_MPT       = 0xd,
  90         CMD_QUERY_MPT       = 0xe,
  91         CMD_HW2SW_MPT       = 0xf,
  92         CMD_READ_MTT        = 0x10,
  93         CMD_WRITE_MTT       = 0x11,
  94         CMD_SYNC_TPT        = 0x2f,
  95
  96         /* EQ commands */
  97         CMD_MAP_EQ          = 0x12,
  98         CMD_SW2HW_EQ        = 0x13,
  99         CMD_HW2SW_EQ        = 0x14,
 100         CMD_QUERY_EQ        = 0x15,
 101
 102         /* CQ commands */
 103         CMD_SW2HW_CQ        = 0x16,
 104         CMD_HW2SW_CQ        = 0x17,
 105         CMD_QUERY_CQ        = 0x18,
 106         CMD_RESIZE_CQ       = 0x2c,
 107
 108         /* SRQ commands */
 109         CMD_SW2HW_SRQ       = 0x35,
 110         CMD_HW2SW_SRQ       = 0x36,
 111         CMD_QUERY_SRQ       = 0x37,
 112
 113         /* QP/EE commands */
 114         CMD_RST2INIT_QPEE   = 0x19,
 115         CMD_INIT2RTR_QPEE   = 0x1a,
 116         CMD_RTR2RTS_QPEE    = 0x1b,
 117         CMD_RTS2RTS_QPEE    = 0x1c,
 118         CMD_SQERR2RTS_QPEE  = 0x1d,
 119         CMD_2ERR_QPEE       = 0x1e,
 120         CMD_RTS2SQD_QPEE    = 0x1f,
 121         CMD_SQD2SQD_QPEE    = 0x38,
 122         CMD_SQD2RTS_QPEE    = 0x20,
 123         CMD_ERR2RST_QPEE    = 0x21,
 124         CMD_QUERY_QPEE      = 0x22,
 125         CMD_INIT2INIT_QPEE  = 0x2d,
 126         CMD_SUSPEND_QPEE    = 0x32,
 127         CMD_UNSUSPEND_QPEE  = 0x33,
 128         /* special QPs and management commands */
 129         CMD_CONF_SPECIAL_QP = 0x23,
 130         CMD_MAD_IFC         = 0x24,
 131
 132         /* multicast commands */
 133         CMD_READ_MGM        = 0x25,
 134         CMD_WRITE_MGM       = 0x26,
 135         CMD_MGID_HASH       = 0x27,
 136
 137         /* miscellaneous commands */
 138         CMD_DIAG_RPRT       = 0x30,
 139         CMD_NOP             = 0x31,
 140
 141         /* debug commands */
 142         CMD_QUERY_DEBUG_MSG = 0x2a,
 143         CMD_SET_DEBUG_MSG   = 0x2b,
 144 };
 145
 146 /*
 147  * According to Mellanox code, FW may be starved and never complete
 148  * commands.  So we can't use strict timeouts described in PRM -- we
 149  * just arbitrarily select 60 seconds for now.
 150  */
 151 #if 0
 152 /*
 153  * Round up and add 1 to make sure we get the full wait time (since we
 154  * will be starting in the middle of a jiffy)
 155  */
 156 enum {
 157         CMD_TIME_CLASS_A = (HZ + 999) / 1000 + 1,
 158         CMD_TIME_CLASS_B = (HZ +  99) /  100 + 1,
 159         CMD_TIME_CLASS_C = (HZ +   9) /   10 + 1
 160 };
 161 #else
 162 enum {
 163         CMD_TIME_CLASS_A = 60 * HZ,
 164         CMD_TIME_CLASS_B = 60 * HZ,
 165         CMD_TIME_CLASS_C = 60 * HZ
 166 };
 167 #endif
 168
 169 enum {
 170         GO_BIT_TIMEOUT = HZ * 10
 171 };
 172
 173 struct mthca_cmd_context {
 174         struct completion done;
 175         struct timer_list timer;
 176         int               result;
 177         int               next;
 178         u64               out_param;
 179         u16               token;
 180         u8                status;
 181 };
 182
 183 static inline int go_bit(struct mthca_dev *dev)
 184 {
 185         return readl(dev->hcr + HCR_STATUS_OFFSET) &
 186                 swab32(1 << HCR_GO_BIT);
 187 }
 188
 189 static int mthca_cmd_post(struct mthca_dev *dev,
 190                           u64 in_param,
 191                           u64 out_param,
 192                           u32 in_modifier,
 193                           u8 op_modifier,
 194                           u16 op,
 195                           u16 token,
 196                           int event)
 197 {
 198         int err = 0;
 199
 200         if (down_interruptible(&dev->cmd.hcr_sem))
 201                 return -EINTR;
 202
 203         if (event) {
 204                 unsigned long end = jiffies + GO_BIT_TIMEOUT;
 205
 206                 while (go_bit(dev) && time_before(jiffies, end)) {
 207                         set_current_state(TASK_RUNNING);
 208                         schedule();
 209                 }
 210         }
 211
 212         if (go_bit(dev)) {
 213                 err = -EAGAIN;
 214                 goto out;
 215         }
 216
 217         /*
 218          * We use writel (instead of something like memcpy_toio)
 219          * because writes of less than 32 bits to the HCR don't work
 220          * (and some architectures such as ia64 implement memcpy_toio
 221          * in terms of writeb).
 222          */
 223         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
 224         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
 225         __raw_writel((__force u32) cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
 226         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
 227         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
 228         __raw_writel((__force u32) cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
 229
 230         /* __raw_writel may not order writes. */
 231         wmb();
 232
 233         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 234                                                (event ? (1 << HCA_E_BIT) : 0)   |
 235                                                (op_modifier << HCR_OPMOD_SHIFT) |
 236                                                op),                       dev->hcr + 6 * 4);
 237
 238 out:
 239         up(&dev->cmd.hcr_sem);
 240         return err;
 241 }
 242
 243 static int mthca_cmd_poll(struct mthca_dev *dev,
 244                           u64 in_param,
 245                           u64 *out_param,
 246                           int out_is_imm,
 247                           u32 in_modifier,
 248                           u8 op_modifier,
 249                           u16 op,
 250                           unsigned long timeout,
 251                           u8 *status)
 252 {
 253         int err = 0;
 254         unsigned long end;
 255
 256         if (down_interruptible(&dev->cmd.poll_sem))
 257                 return -EINTR;
 258
 259         err = mthca_cmd_post(dev, in_param,
 260                              out_param ? *out_param : 0,
 261                              in_modifier, op_modifier,
 262                              op, CMD_POLL_TOKEN, 0);
 263         if (err)
 264                 goto out;
 265
 266         end = timeout + jiffies;
 267         while (go_bit(dev) && time_before(jiffies, end)) {
 268                 set_current_state(TASK_RUNNING);
 269                 schedule();
 270         }
 271
 272         if (go_bit(dev)) {
 273                 err = -EBUSY;
 274                 goto out;
 275         }
 276
 277         if (out_is_imm)
 278                 *out_param =
 279                         (u64) be32_to_cpu((__force __be32)
 280                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 281                         (u64) be32_to_cpu((__force __be32)
 282                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 283
 284         *status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 285
 286 out:
 287         up(&dev->cmd.poll_sem);
 288         return err;
 289 }
 290
 291 void mthca_cmd_event(struct mthca_dev *dev,
 292                      u16 token,
 293                      u8  status,
 294                      u64 out_param)
 295 {
 296         struct mthca_cmd_context *context =
 297                 &dev->cmd.context[token & dev->cmd.token_mask];
 298
 299         /* previously timed out command completing at long last */
 300         if (token != context->token)
 301                 return;
 302
 303         context->result    = 0;
 304         context->status    = status;
 305         context->out_param = out_param;
 306
 307         context->token += dev->cmd.token_mask + 1;
 308
 309         complete(&context->done);
 310 }
 311
 312 static void event_timeout(unsigned long context_ptr)
 313 {
 314         struct mthca_cmd_context *context =
 315                 (struct mthca_cmd_context *) context_ptr;
 316
 317         context->result = -EBUSY;
 318         complete(&context->done);
 319 }
 320
 321 static int mthca_cmd_wait(struct mthca_dev *dev,
 322                           u64 in_param,
 323                           u64 *out_param,
 324                           int out_is_imm,
 325                           u32 in_modifier,
 326                           u8 op_modifier,
 327                           u16 op,
 328                           unsigned long timeout,
 329                           u8 *status)
 330 {
 331         int err = 0;
 332         struct mthca_cmd_context *context;
 333
 334         if (down_interruptible(&dev->cmd.event_sem))
 335                 return -EINTR;
 336
 337         spin_lock(&dev->cmd.context_lock);
 338         BUG_ON(dev->cmd.free_head < 0);
 339         context = &dev->cmd.context[dev->cmd.free_head];
 340         dev->cmd.free_head = context->next;
 341         spin_unlock(&dev->cmd.context_lock);
 342
 343         init_completion(&context->done);
 344
 345         err = mthca_cmd_post(dev, in_param,
 346                              out_param ? *out_param : 0,
 347                              in_modifier, op_modifier,
 348                              op, context->token, 1);
 349         if (err)
 350                 goto out;
 351
 352         context->timer.expires  = jiffies + timeout;
 353         add_timer(&context->timer);
 354
 355         wait_for_completion(&context->done);
 356         del_timer_sync(&context->timer);
 357
 358         err = context->result;
 359         if (err)
 360                 goto out;
 361
 362         *status = context->status;
 363         if (*status)
 364                 mthca_dbg(dev, "Command %02x completed with status %02x\n",
 365                           op, *status);
 366
 367         if (out_is_imm)
 368                 *out_param = context->out_param;
 369
 370 out:
 371         spin_lock(&dev->cmd.context_lock);
 372         context->next = dev->cmd.free_head;
 373         dev->cmd.free_head = context - dev->cmd.context;
 374         spin_unlock(&dev->cmd.context_lock);
 375
 376         up(&dev->cmd.event_sem);
 377         return err;
 378 }
 379
 380 /* Invoke a command with an output mailbox */
 381 static int mthca_cmd_box(struct mthca_dev *dev,
 382                          u64 in_param,
 383                          u64 out_param,
 384                          u32 in_modifier,
 385                          u8 op_modifier,
 386                          u16 op,
 387                          unsigned long timeout,
 388                          u8 *status)
 389 {
 390         if (dev->cmd.use_events)
 391                 return mthca_cmd_wait(dev, in_param, &out_param, 0,
 392                                       in_modifier, op_modifier, op,
 393                                       timeout, status);
 394         else
 395                 return mthca_cmd_poll(dev, in_param, &out_param, 0,
 396                                       in_modifier, op_modifier, op,
 397                                       timeout, status);
 398 }
 399
 400 /* Invoke a command with no output parameter */
 401 static int mthca_cmd(struct mthca_dev *dev,
 402                      u64 in_param,
 403                      u32 in_modifier,
 404                      u8 op_modifier,
 405                      u16 op,
 406                      unsigned long timeout,
 407                      u8 *status)
 408 {
 409         return mthca_cmd_box(dev, in_param, 0, in_modifier,
 410                              op_modifier, op, timeout, status);
 411 }
 412
 413 /*
 414  * Invoke a command with an immediate output parameter (and copy the
 415  * output into the caller's out_param pointer after the command
 416  * executes).
 417  */
 418 static int mthca_cmd_imm(struct mthca_dev *dev,
 419                          u64 in_param,
 420                          u64 *out_param,
 421                          u32 in_modifier,
 422                          u8 op_modifier,
 423                          u16 op,
 424                          unsigned long timeout,
 425                          u8 *status)
 426 {
 427         if (dev->cmd.use_events)
 428                 return mthca_cmd_wait(dev, in_param, out_param, 1,
 429                                       in_modifier, op_modifier, op,
 430                                       timeout, status);
 431         else
 432                 return mthca_cmd_poll(dev, in_param, out_param, 1,
 433                                       in_modifier, op_modifier, op,
 434                                       timeout, status);
 435 }
 436
 437 int mthca_cmd_init(struct mthca_dev *dev)
 438 {
 439         sema_init(&dev->cmd.hcr_sem, 1);
 440         sema_init(&dev->cmd.poll_sem, 1);
 441         dev->cmd.use_events = 0;
 442
 443         dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
 444                            MTHCA_HCR_SIZE);
 445         if (!dev->hcr) {
 446                 mthca_err(dev, "Couldn't map command register.");
 447                 return -ENOMEM;
 448         }
 449
 450         dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
 451                                         MTHCA_MAILBOX_SIZE,
 452                                         MTHCA_MAILBOX_SIZE, 0);
 453         if (!dev->cmd.pool) {
 454                 iounmap(dev->hcr);
 455                 return -ENOMEM;
 456         }
 457
 458         return 0;
 459 }
 460
 461 void mthca_cmd_cleanup(struct mthca_dev *dev)
 462 {
 463         pci_pool_destroy(dev->cmd.pool);
 464         iounmap(dev->hcr);
 465 }
 466
 467 /*
 468  * Switch to using events to issue FW commands (should be called after
 469  * event queue to command events has been initialized).
 470  */
 471 int mthca_cmd_use_events(struct mthca_dev *dev)
 472 {
 473         int i;
 474
 475         dev->cmd.context = kmalloc(dev->cmd.max_cmds *
 476                                    sizeof (struct mthca_cmd_context),
 477                                    GFP_KERNEL);
 478         if (!dev->cmd.context)
 479                 return -ENOMEM;
 480
 481         for (i = 0; i < dev->cmd.max_cmds; ++i) {
 482                 dev->cmd.context[i].token = i;
 483                 dev->cmd.context[i].next = i + 1;
 484                 init_timer(&dev->cmd.context[i].timer);
 485                 dev->cmd.context[i].timer.data     =
 486                         (unsigned long) &dev->cmd.context[i];
 487                 dev->cmd.context[i].timer.function = event_timeout;
 488         }
 489
 490         dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
 491         dev->cmd.free_head = 0;
 492
 493         sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
 494         spin_lock_init(&dev->cmd.context_lock);
 495
 496         for (dev->cmd.token_mask = 1;
 497              dev->cmd.token_mask < dev->cmd.max_cmds;
 498              dev->cmd.token_mask <<= 1)
 499                 ; /* nothing */
 500         --dev->cmd.token_mask;
 501
 502         dev->cmd.use_events = 1;
 503         down(&dev->cmd.poll_sem);
 504
 505         return 0;
 506 }
 507
 508 /*
 509  * Switch back to polling (used when shutting down the device)
 510  */
 511 void mthca_cmd_use_polling(struct mthca_dev *dev)
 512 {
 513         int i;
 514
 515         dev->cmd.use_events = 0;
 516
 517         for (i = 0; i < dev->cmd.max_cmds; ++i)
 518                 down(&dev->cmd.event_sem);
 519
 520         kfree(dev->cmd.context);
 521
 522         up(&dev->cmd.poll_sem);
 523 }
 524
 525 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
 526                                           unsigned int gfp_mask)
 527 {
 528         struct mthca_mailbox *mailbox;
 529
 530         mailbox = kmalloc(sizeof *mailbox, gfp_mask);
 531         if (!mailbox)
 532                 return ERR_PTR(-ENOMEM);
 533
 534         mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
 535         if (!mailbox->buf) {
 536                 kfree(mailbox);
 537                 return ERR_PTR(-ENOMEM);
 538         }
 539
 540         return mailbox;
 541 }
 542
 543 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
 544 {
 545         if (!mailbox)
 546                 return;
 547
 548         pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 549         kfree(mailbox);
 550 }
 551
 552 int mthca_SYS_EN(struct mthca_dev *dev, u8 *status)
 553 {
 554         u64 out;
 555         int ret;
 556
 557         ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, HZ, status);
 558
 559         if (*status == MTHCA_CMD_STAT_DDR_MEM_ERR)
 560                 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
 561                            "sladdr=%d, SPD source=%s\n",
 562                            (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
 563                            (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
 564
 565         return ret;
 566 }
 567
 568 int mthca_SYS_DIS(struct mthca_dev *dev, u8 *status)
 569 {
 570         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, HZ, status);
 571 }
 572
 573 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
 574                          u64 virt, u8 *status)
 575 {
 576         struct mthca_mailbox *mailbox;
 577         struct mthca_icm_iter iter;
 578         __be64 *pages;
 579         int lg;
 580         int nent = 0;
 581         int i;
 582         int err = 0;
 583         int ts = 0, tc = 0;
 584
 585         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 586         if (IS_ERR(mailbox))
 587                 return PTR_ERR(mailbox);
 588         memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
 589         pages = mailbox->buf;
 590
 591         for (mthca_icm_first(icm, &iter);
 592              !mthca_icm_last(&iter);
 593              mthca_icm_next(&iter)) {
 594                 /*
 595                  * We have to pass pages that are aligned to their
 596                  * size, so find the least significant 1 in the
 597                  * address or size and use that as our log2 size.
 598                  */
 599                 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
 600                 if (lg < 12) {
 601                         mthca_warn(dev, "Got FW area not aligned to 4K (%llx/%lx).\n",
 602                                    (unsigned long long) mthca_icm_addr(&iter),
 603                                    mthca_icm_size(&iter));
 604                         err = -EINVAL;
 605                         goto out;
 606                 }
 607                 for (i = 0; i < mthca_icm_size(&iter) / (1 << lg); ++i, ++nent) {
 608                         if (virt != -1) {
 609                                 pages[nent * 2] = cpu_to_be64(virt);
 610                                 virt += 1 << lg;
 611                         }
 612
 613                         pages[nent * 2 + 1] = cpu_to_be64((mthca_icm_addr(&iter) +
 614                                                            (i << lg)) | (lg - 12));
 615                         ts += 1 << (lg - 10);
 616                         ++tc;
 617
 618                         if (nent == MTHCA_MAILBOX_SIZE / 16) {
 619                                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 620                                                 CMD_TIME_CLASS_B, status);
 621                                 if (err || *status)
 622                                         goto out;
 623                                 nent = 0;
 624                         }
 625                 }
 626         }
 627
 628         if (nent)
 629                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 630                                 CMD_TIME_CLASS_B, status);
 631
 632         switch (op) {
 633         case CMD_MAP_FA:
 634                 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
 635                 break;
 636         case CMD_MAP_ICM_AUX:
 637                 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
 638                 break;
 639         case CMD_MAP_ICM:
 640                 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
 641                           tc, ts, (unsigned long long) virt - (ts << 10));
 642                 break;
 643         }
 644
 645 out:
 646         mthca_free_mailbox(dev, mailbox);
 647         return err;
 648 }
 649
 650 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
 651 {
 652         return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1, status);
 653 }
 654
 655 int mthca_UNMAP_FA(struct mthca_dev *dev, u8 *status)
 656 {
 657         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B, status);
 658 }
 659
 660 int mthca_RUN_FW(struct mthca_dev *dev, u8 *status)
 661 {
 662         return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A, status);
 663 }
 664
 665 int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status)
 666 {
 667         struct mthca_mailbox *mailbox;
 668         u32 *outbox;
 669         int err = 0;
 670         u8 lg;
 671
 672 #define QUERY_FW_OUT_SIZE             0x100
 673 #define QUERY_FW_VER_OFFSET            0x00
 674 #define QUERY_FW_MAX_CMD_OFFSET        0x0f
 675 #define QUERY_FW_ERR_START_OFFSET      0x30
 676 #define QUERY_FW_ERR_SIZE_OFFSET       0x38
 677
 678 #define QUERY_FW_START_OFFSET          0x20
 679 #define QUERY_FW_END_OFFSET            0x28
 680
 681 #define QUERY_FW_SIZE_OFFSET           0x00
 682 #define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
 683 #define QUERY_FW_EQ_ARM_BASE_OFFSET    0x40
 684 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
 685
 686         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 687         if (IS_ERR(mailbox))
 688                 return PTR_ERR(mailbox);
 689         outbox = mailbox->buf;
 690
 691         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
 692                             CMD_TIME_CLASS_A, status);
 693
 694         if (err)
 695                 goto out;
 696
 697         MTHCA_GET(dev->fw_ver,   outbox, QUERY_FW_VER_OFFSET);
 698         /*
 699          * FW subminor version is at more signifant bits than minor
 700          * version, so swap here.
 701          */
 702         dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
 703                 ((dev->fw_ver & 0xffff0000ull) >> 16) |
 704                 ((dev->fw_ver & 0x0000ffffull) << 16);
 705
 706         MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
 707         dev->cmd.max_cmds = 1 << lg;
 708
 709         mthca_dbg(dev, "FW version %012llx, max commands %d\n",
 710                   (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
 711
 712         if (mthca_is_memfree(dev)) {
 713                 MTHCA_GET(dev->fw.arbel.fw_pages,       outbox, QUERY_FW_SIZE_OFFSET);
 714                 MTHCA_GET(dev->fw.arbel.clr_int_base,   outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
 715                 MTHCA_GET(dev->fw.arbel.eq_arm_base,    outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
 716                 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
 717                 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
 718
 719                 /*
 720                  * Arbel page size is always 4 KB; round up number of
 721                  * system pages needed.
 722                  */
 723                 dev->fw.arbel.fw_pages =
 724                         (dev->fw.arbel.fw_pages + (1 << (PAGE_SHIFT - 12)) - 1) >>
 725                         (PAGE_SHIFT - 12);
 726
 727                 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
 728                           (unsigned long long) dev->fw.arbel.clr_int_base,
 729                           (unsigned long long) dev->fw.arbel.eq_arm_base,
 730                           (unsigned long long) dev->fw.arbel.eq_set_ci_base);
 731         } else {
 732                 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
 733                 MTHCA_GET(dev->fw.tavor.fw_end,   outbox, QUERY_FW_END_OFFSET);
 734
 735                 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
 736                           (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
 737                           (unsigned long long) dev->fw.tavor.fw_start,
 738                           (unsigned long long) dev->fw.tavor.fw_end);
 739         }
 740
 741 out:
 742         mthca_free_mailbox(dev, mailbox);
 743         return err;
 744 }
 745
 746 int mthca_ENABLE_LAM(struct mthca_dev *dev, u8 *status)
 747 {
 748         struct mthca_mailbox *mailbox;
 749         u8 info;
 750         u32 *outbox;
 751         int err = 0;
 752
 753 #define ENABLE_LAM_OUT_SIZE         0x100
 754 #define ENABLE_LAM_START_OFFSET     0x00
 755 #define ENABLE_LAM_END_OFFSET       0x08
 756 #define ENABLE_LAM_INFO_OFFSET      0x13
 757
 758 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
 759 #define ENABLE_LAM_INFO_ECC_MASK    0x3
 760
 761         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 762         if (IS_ERR(mailbox))
 763                 return PTR_ERR(mailbox);
 764         outbox = mailbox->buf;
 765
 766         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
 767                             CMD_TIME_CLASS_C, status);
 768
 769         if (err)
 770                 goto out;
 771
 772         if (*status == MTHCA_CMD_STAT_LAM_NOT_PRE)
 773                 goto out;
 774
 775         MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
 776         MTHCA_GET(dev->ddr_end,   outbox, ENABLE_LAM_END_OFFSET);
 777         MTHCA_GET(info,           outbox, ENABLE_LAM_INFO_OFFSET);
 778
 779         if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
 780             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 781                 mthca_info(dev, "FW reports that HCA-attached memory "
 782                            "is %s hidden; does not match PCI config\n",
 783                            (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
 784                            "" : "not");
 785         }
 786         if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
 787                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 788
 789         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 790                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 791                   (unsigned long long) dev->ddr_start,
 792                   (unsigned long long) dev->ddr_end);
 793
 794 out:
 795         mthca_free_mailbox(dev, mailbox);
 796         return err;
 797 }
 798
 799 int mthca_DISABLE_LAM(struct mthca_dev *dev, u8 *status)
 800 {
 801         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 802 }
 803
 804 int mthca_QUERY_DDR(struct mthca_dev *dev, u8 *status)
 805 {
 806         struct mthca_mailbox *mailbox;
 807         u8 info;
 808         u32 *outbox;
 809         int err = 0;
 810
 811 #define QUERY_DDR_OUT_SIZE         0x100
 812 #define QUERY_DDR_START_OFFSET     0x00
 813 #define QUERY_DDR_END_OFFSET       0x08
 814 #define QUERY_DDR_INFO_OFFSET      0x13
 815
 816 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
 817 #define QUERY_DDR_INFO_ECC_MASK    0x3
 818
 819         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 820         if (IS_ERR(mailbox))
 821                 return PTR_ERR(mailbox);
 822         outbox = mailbox->buf;
 823
 824         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
 825                             CMD_TIME_CLASS_A, status);
 826
 827         if (err)
 828                 goto out;
 829
 830         MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
 831         MTHCA_GET(dev->ddr_end,   outbox, QUERY_DDR_END_OFFSET);
 832         MTHCA_GET(info,           outbox, QUERY_DDR_INFO_OFFSET);
 833
 834         if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
 835             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 836                 mthca_info(dev, "FW reports that HCA-attached memory "
 837                            "is %s hidden; does not match PCI config\n",
 838                            (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
 839                            "" : "not");
 840         }
 841         if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
 842                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 843
 844         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 845                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 846                   (unsigned long long) dev->ddr_start,
 847                   (unsigned long long) dev->ddr_end);
 848
 849 out:
 850         mthca_free_mailbox(dev, mailbox);
 851         return err;
 852 }
 853
 854 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 855                         struct mthca_dev_lim *dev_lim, u8 *status)
 856 {
 857         struct mthca_mailbox *mailbox;
 858         u32 *outbox;
 859         u8 field;
 860         u16 size;
 861         int err;
 862
 863 #define QUERY_DEV_LIM_OUT_SIZE             0x100
 864 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET     0x10
 865 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET      0x11
 866 #define QUERY_DEV_LIM_RSVD_QP_OFFSET        0x12
 867 #define QUERY_DEV_LIM_MAX_QP_OFFSET         0x13
 868 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET       0x14
 869 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET        0x15
 870 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET       0x16
 871 #define QUERY_DEV_LIM_MAX_EEC_OFFSET        0x17
 872 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET      0x19
 873 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET        0x1a
 874 #define QUERY_DEV_LIM_MAX_CQ_OFFSET         0x1b
 875 #define QUERY_DEV_LIM_MAX_MPT_OFFSET        0x1d
 876 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET        0x1e
 877 #define QUERY_DEV_LIM_MAX_EQ_OFFSET         0x1f
 878 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET       0x20
 879 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET     0x21
 880 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET       0x22
 881 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET    0x23
 882 #define QUERY_DEV_LIM_MAX_AV_OFFSET         0x27
 883 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET     0x29
 884 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET     0x2b
 885 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET       0x2f
 886 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET        0x33
 887 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET      0x35
 888 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET      0x36
 889 #define QUERY_DEV_LIM_VL_PORT_OFFSET        0x37
 890 #define QUERY_DEV_LIM_MAX_GID_OFFSET        0x3b
 891 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET       0x3f
 892 #define QUERY_DEV_LIM_FLAGS_OFFSET          0x44
 893 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET       0x48
 894 #define QUERY_DEV_LIM_UAR_SZ_OFFSET         0x49
 895 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET        0x4b
 896 #define QUERY_DEV_LIM_MAX_SG_OFFSET         0x51
 897 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET    0x52
 898 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET      0x55
 899 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
 900 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET     0x61
 901 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET       0x62
 902 #define QUERY_DEV_LIM_MAX_MCG_OFFSET        0x63
 903 #define QUERY_DEV_LIM_RSVD_PD_OFFSET        0x64
 904 #define QUERY_DEV_LIM_MAX_PD_OFFSET         0x65
 905 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET       0x66
 906 #define QUERY_DEV_LIM_MAX_RDD_OFFSET        0x67
 907 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET   0x80
 908 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET   0x82
 909 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET  0x84
 910 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET  0x86
 911 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET   0x88
 912 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET   0x8a
 913 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET   0x8c
 914 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET   0x8e
 915 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET   0x90
 916 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET   0x92
 917 #define QUERY_DEV_LIM_PBL_SZ_OFFSET         0x96
 918 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET     0x97
 919 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET      0x98
 920 #define QUERY_DEV_LIM_LAMR_OFFSET           0x9f
 921 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET     0xa0
 922
 923         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 924         if (IS_ERR(mailbox))
 925                 return PTR_ERR(mailbox);
 926         outbox = mailbox->buf;
 927
 928         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
 929                             CMD_TIME_CLASS_A, status);
 930
 931         if (err)
 932                 goto out;
 933
 934         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
 935         dev_lim->max_srq_sz = 1 << field;
 936         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
 937         dev_lim->max_qp_sz = 1 << field;
 938         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
 939         dev_lim->reserved_qps = 1 << (field & 0xf);
 940         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
 941         dev_lim->max_qps = 1 << (field & 0x1f);
 942         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
 943         dev_lim->reserved_srqs = 1 << (field >> 4);
 944         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
 945         dev_lim->max_srqs = 1 << (field & 0x1f);
 946         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
 947         dev_lim->reserved_eecs = 1 << (field & 0xf);
 948         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
 949         dev_lim->max_eecs = 1 << (field & 0x1f);
 950         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
 951         dev_lim->max_cq_sz = 1 << field;
 952         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
 953         dev_lim->reserved_cqs = 1 << (field & 0xf);
 954         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
 955         dev_lim->max_cqs = 1 << (field & 0x1f);
 956         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
 957         dev_lim->max_mpts = 1 << (field & 0x3f);
 958         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
 959         dev_lim->reserved_eqs = 1 << (field & 0xf);
 960         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
 961         dev_lim->max_eqs = 1 << (field & 0x7);
 962         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
 963         dev_lim->reserved_mtts = 1 << (field >> 4);
 964         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
 965         dev_lim->max_mrw_sz = 1 << field;
 966         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
 967         dev_lim->reserved_mrws = 1 << (field & 0xf);
 968         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
 969         dev_lim->max_mtt_seg = 1 << (field & 0x3f);
 970         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
 971         dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
 972         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
 973         dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
 974         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
 975         dev_lim->max_rdma_global = 1 << (field & 0x3f);
 976         MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
 977         dev_lim->local_ca_ack_delay = field & 0x1f;
 978         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
 979         dev_lim->max_mtu        = field >> 4;
 980         dev_lim->max_port_width = field & 0xf;
 981         MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
 982         dev_lim->max_vl    = field >> 4;
 983         dev_lim->num_ports = field & 0xf;
 984         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
 985         dev_lim->max_gids = 1 << (field & 0xf);
 986         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
 987         dev_lim->max_pkeys = 1 << (field & 0xf);
 988         MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
 989         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
 990         dev_lim->reserved_uars = field >> 4;
 991         MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
 992         dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
 993         MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
 994         dev_lim->min_page_sz = 1 << field;
 995         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
 996         dev_lim->max_sg = field;
 997
 998         MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
 999         dev_lim->max_desc_sz = size;
1000
1001         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
1002         dev_lim->max_qp_per_mcg = 1 << field;
1003         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
1004         dev_lim->reserved_mgms = field & 0xf;
1005         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
1006         dev_lim->max_mcgs = 1 << field;
1007         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
1008         dev_lim->reserved_pds = field >> 4;
1009         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
1010         dev_lim->max_pds = 1 << (field & 0x3f);
1011         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
1012         dev_lim->reserved_rdds = field >> 4;
1013         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
1014         dev_lim->max_rdds = 1 << (field & 0x3f);
1015
1016         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
1017         dev_lim->eec_entry_sz = size;
1018         MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
1019         dev_lim->qpc_entry_sz = size;
1020         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
1021         dev_lim->eeec_entry_sz = size;
1022         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
1023         dev_lim->eqpc_entry_sz = size;
1024         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
1025         dev_lim->eqc_entry_sz = size;
1026         MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
1027         dev_lim->cqc_entry_sz = size;
1028         MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
1029         dev_lim->srq_entry_sz = size;
1030         MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
1031         dev_lim->uar_scratch_entry_sz = size;
1032
1033         mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
1034                   dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
1035         mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
1036                   dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
1037         mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
1038                   dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
1039         mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
1040                   dev_lim->reserved_mrws, dev_lim->reserved_mtts);
1041         mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
1042                   dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
1043         mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
1044                   dev_lim->max_pds, dev_lim->reserved_mgms);
1045
1046         mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
1047
1048         if (mthca_is_memfree(dev)) {
1049                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
1050                 dev_lim->hca.arbel.resize_srq = field & 1;
1051                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
1052                 dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
1053                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
1054                 dev_lim->mpt_entry_sz = size;
1055                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
1056                 dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
1057                 MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
1058                           QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
1059                 MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
1060                           QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
1061                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
1062                 dev_lim->hca.arbel.lam_required = field & 1;
1063                 MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
1064                           QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
1065
1066                 if (dev_lim->hca.arbel.bmme_flags & 1)
1067                         mthca_dbg(dev, "Base MM extensions: yes "
1068                                   "(flags %d, max PBL %d, rsvd L_Key %08x)\n",
1069                                   dev_lim->hca.arbel.bmme_flags,
1070                                   dev_lim->hca.arbel.max_pbl_sz,
1071                                   dev_lim->hca.arbel.reserved_lkey);
1072                 else
1073                         mthca_dbg(dev, "Base MM extensions: no\n");
1074
1075                 mthca_dbg(dev, "Max ICM size %lld MB\n",
1076                           (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
1077         } else {
1078                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
1079                 dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
1080                 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
1081         }
1082
1083 out:
1084         mthca_free_mailbox(dev, mailbox);
1085         return err;
1086 }
1087
1088 static void get_board_id(void *vsd, char *board_id)
1089 {
1090         int i;
1091
1092 #define VSD_OFFSET_SIG1         0x00
1093 #define VSD_OFFSET_SIG2         0xde
1094 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
1095 #define VSD_OFFSET_TS_BOARD_ID  0x20
1096
1097 #define VSD_SIGNATURE_TOPSPIN   0x5ad
1098
1099         memset(board_id, 0, MTHCA_BOARD_ID_LEN);
1100
1101         if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
1102             be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
1103                 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
1104         } else {
1105                 /*
1106                  * The board ID is a string but the firmware byte
1107                  * swaps each 4-byte word before passing it back to
1108                  * us.  Therefore we need to swab it before printing.
1109                  */
1110                 for (i = 0; i < 4; ++i)
1111                         ((u32 *) board_id)[i] =
1112                                 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
1113         }
1114 }
1115
1116 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
1117                         struct mthca_adapter *adapter, u8 *status)
1118 {
1119         struct mthca_mailbox *mailbox;
1120         u32 *outbox;
1121         int err;
1122
1123 #define QUERY_ADAPTER_OUT_SIZE             0x100
1124 #define QUERY_ADAPTER_VENDOR_ID_OFFSET     0x00
1125 #define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
1126 #define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
1127 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
1128 #define QUERY_ADAPTER_VSD_OFFSET           0x20
1129
1130         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1131         if (IS_ERR(mailbox))
1132                 return PTR_ERR(mailbox);
1133         outbox = mailbox->buf;
1134
1135         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_ADAPTER,
1136                             CMD_TIME_CLASS_A, status);
1137
1138         if (err)
1139                 goto out;
1140
1141         MTHCA_GET(adapter->vendor_id, outbox,   QUERY_ADAPTER_VENDOR_ID_OFFSET);
1142         MTHCA_GET(adapter->device_id, outbox,   QUERY_ADAPTER_DEVICE_ID_OFFSET);
1143         MTHCA_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
1144         MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
1145
1146         get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1147                      adapter->board_id);
1148
1149 out:
1150         mthca_free_mailbox(dev, mailbox);
1151         return err;
1152 }
1153
1154 int mthca_INIT_HCA(struct mthca_dev *dev,
1155                    struct mthca_init_hca_param *param,
1156                    u8 *status)
1157 {
1158         struct mthca_mailbox *mailbox;
1159         __be32 *inbox;
1160         int err;
1161
1162 #define INIT_HCA_IN_SIZE                 0x200
1163 #define INIT_HCA_FLAGS_OFFSET            0x014
1164 #define INIT_HCA_QPC_OFFSET              0x020
1165 #define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
1166 #define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
1167 #define  INIT_HCA_EEC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x20)
1168 #define  INIT_HCA_LOG_EEC_OFFSET         (INIT_HCA_QPC_OFFSET + 0x27)
1169 #define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
1170 #define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
1171 #define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
1172 #define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
1173 #define  INIT_HCA_EQPC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
1174 #define  INIT_HCA_EEEC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
1175 #define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
1176 #define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
1177 #define  INIT_HCA_RDB_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x70)
1178 #define INIT_HCA_UDAV_OFFSET             0x0b0
1179 #define  INIT_HCA_UDAV_LKEY_OFFSET       (INIT_HCA_UDAV_OFFSET + 0x0)
1180 #define  INIT_HCA_UDAV_PD_OFFSET         (INIT_HCA_UDAV_OFFSET + 0x4)
1181 #define INIT_HCA_MCAST_OFFSET            0x0c0
1182 #define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
1183 #define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1184 #define  INIT_HCA_MC_HASH_SZ_OFFSET      (INIT_HCA_MCAST_OFFSET + 0x16)
1185 #define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1186 #define INIT_HCA_TPT_OFFSET              0x0f0
1187 #define  INIT_HCA_MPT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x00)
1188 #define  INIT_HCA_MTT_SEG_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x09)
1189 #define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
1190 #define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
1191 #define INIT_HCA_UAR_OFFSET              0x120
1192 #define  INIT_HCA_UAR_BASE_OFFSET        (INIT_HCA_UAR_OFFSET + 0x00)
1193 #define  INIT_HCA_UARC_SZ_OFFSET         (INIT_HCA_UAR_OFFSET + 0x09)
1194 #define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
1195 #define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)
1196 #define  INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1197 #define  INIT_HCA_UAR_CTX_BASE_OFFSET    (INIT_HCA_UAR_OFFSET + 0x18)
1198
1199         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1200         if (IS_ERR(mailbox))
1201                 return PTR_ERR(mailbox);
1202         inbox = mailbox->buf;
1203
1204         memset(inbox, 0, INIT_HCA_IN_SIZE);
1205
1206 #if defined(__LITTLE_ENDIAN)
1207         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1208 #elif defined(__BIG_ENDIAN)
1209         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
1210 #else
1211 #error Host endianness not defined
1212 #endif
1213         /* Check port for UD address vector: */
1214         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);
1215
1216         /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1217
1218         /* QPC/EEC/CQC/EQC/RDB attributes */
1219
1220         MTHCA_PUT(inbox, param->qpc_base,     INIT_HCA_QPC_BASE_OFFSET);
1221         MTHCA_PUT(inbox, param->log_num_qps,  INIT_HCA_LOG_QP_OFFSET);
1222         MTHCA_PUT(inbox, param->eec_base,     INIT_HCA_EEC_BASE_OFFSET);
1223         MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1224         MTHCA_PUT(inbox, param->srqc_base,    INIT_HCA_SRQC_BASE_OFFSET);
1225         MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1226         MTHCA_PUT(inbox, param->cqc_base,     INIT_HCA_CQC_BASE_OFFSET);
1227         MTHCA_PUT(inbox, param->log_num_cqs,  INIT_HCA_LOG_CQ_OFFSET);
1228         MTHCA_PUT(inbox, param->eqpc_base,    INIT_HCA_EQPC_BASE_OFFSET);
1229         MTHCA_PUT(inbox, param->eeec_base,    INIT_HCA_EEEC_BASE_OFFSET);
1230         MTHCA_PUT(inbox, param->eqc_base,     INIT_HCA_EQC_BASE_OFFSET);
1231         MTHCA_PUT(inbox, param->log_num_eqs,  INIT_HCA_LOG_EQ_OFFSET);
1232         MTHCA_PUT(inbox, param->rdb_base,     INIT_HCA_RDB_BASE_OFFSET);
1233
1234         /* UD AV attributes */
1235
1236         /* multicast attributes */
1237
1238         MTHCA_PUT(inbox, param->mc_base,         INIT_HCA_MC_BASE_OFFSET);
1239         MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1240         MTHCA_PUT(inbox, param->mc_hash_sz,      INIT_HCA_MC_HASH_SZ_OFFSET);
1241         MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1242
1243         /* TPT attributes */
1244
1245         MTHCA_PUT(inbox, param->mpt_base,   INIT_HCA_MPT_BASE_OFFSET);
1246         if (!mthca_is_memfree(dev))
1247                 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1248         MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1249         MTHCA_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
1250
1251         /* UAR attributes */
1252         {
1253                 u8 uar_page_sz = PAGE_SHIFT - 12;
1254                 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1255         }
1256
1257         MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1258
1259         if (mthca_is_memfree(dev)) {
1260                 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1261                 MTHCA_PUT(inbox, param->log_uar_sz,  INIT_HCA_LOG_UAR_SZ_OFFSET);
1262                 MTHCA_PUT(inbox, param->uarc_base,   INIT_HCA_UAR_CTX_BASE_OFFSET);
1263         }
1264
1265         err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, HZ, status);
1266
1267         mthca_free_mailbox(dev, mailbox);
1268         return err;
1269 }
1270
1271 int mthca_INIT_IB(struct mthca_dev *dev,
1272                   struct mthca_init_ib_param *param,
1273                   int port, u8 *status)
1274 {
1275         struct mthca_mailbox *mailbox;
1276         u32 *inbox;
1277         int err;
1278         u32 flags;
1279
1280 #define INIT_IB_IN_SIZE          56
1281 #define INIT_IB_FLAGS_OFFSET     0x00
1282 #define INIT_IB_FLAG_SIG         (1 << 18)
1283 #define INIT_IB_FLAG_NG          (1 << 17)
1284 #define INIT_IB_FLAG_G0          (1 << 16)
1285 #define INIT_IB_VL_SHIFT         4
1286 #define INIT_IB_PORT_WIDTH_SHIFT 8
1287 #define INIT_IB_MTU_SHIFT        12
1288 #define INIT_IB_MAX_GID_OFFSET   0x06
1289 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
1290 #define INIT_IB_GUID0_OFFSET     0x10
1291 #define INIT_IB_NODE_GUID_OFFSET 0x18
1292 #define INIT_IB_SI_GUID_OFFSET   0x20
1293
1294         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1295         if (IS_ERR(mailbox))
1296                 return PTR_ERR(mailbox);
1297         inbox = mailbox->buf;
1298
1299         memset(inbox, 0, INIT_IB_IN_SIZE);
1300
1301         flags = 0;
1302         flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
1303         flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
1304         flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
1305         flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1306         flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1307         flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1308         MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1309
1310         MTHCA_PUT(inbox, param->gid_cap,   INIT_IB_MAX_GID_OFFSET);
1311         MTHCA_PUT(inbox, param->pkey_cap,  INIT_IB_MAX_PKEY_OFFSET);
1312         MTHCA_PUT(inbox, param->guid0,     INIT_IB_GUID0_OFFSET);
1313         MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1314         MTHCA_PUT(inbox, param->si_guid,   INIT_IB_SI_GUID_OFFSET);
1315
1316         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1317                         CMD_TIME_CLASS_A, status);
1318
1319         mthca_free_mailbox(dev, mailbox);
1320         return err;
1321 }
1322
1323 int mthca_CLOSE_IB(struct mthca_dev *dev, int port, u8 *status)
1324 {
1325         return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, HZ, status);
1326 }
1327
1328 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic, u8 *status)
1329 {
1330         return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, HZ, status);
1331 }
1332
1333 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1334                  int port, u8 *status)
1335 {
1336         struct mthca_mailbox *mailbox;
1337         u32 *inbox;
1338         int err;
1339         u32 flags = 0;
1340
1341 #define SET_IB_IN_SIZE         0x40
1342 #define SET_IB_FLAGS_OFFSET    0x00
1343 #define SET_IB_FLAG_SIG        (1 << 18)
1344 #define SET_IB_FLAG_RQK        (1 <<  0)
1345 #define SET_IB_CAP_MASK_OFFSET 0x04
1346 #define SET_IB_SI_GUID_OFFSET  0x08
1347
1348         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1349         if (IS_ERR(mailbox))
1350                 return PTR_ERR(mailbox);
1351         inbox = mailbox->buf;
1352
1353         memset(inbox, 0, SET_IB_IN_SIZE);
1354
1355         flags |= param->set_si_guid     ? SET_IB_FLAG_SIG : 0;
1356         flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1357         MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1358
1359         MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1360         MTHCA_PUT(inbox, param->si_guid,  SET_IB_SI_GUID_OFFSET);
1361
1362         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1363                         CMD_TIME_CLASS_B, status);
1364
1365         mthca_free_mailbox(dev, mailbox);
1366         return err;
1367 }
1368
1369 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *status)
1370 {
1371         return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt, status);
1372 }
1373
1374 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
1375 {
1376         struct mthca_mailbox *mailbox;
1377         __be64 *inbox;
1378         int err;
1379
1380         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1381         if (IS_ERR(mailbox))
1382                 return PTR_ERR(mailbox);
1383         inbox = mailbox->buf;
1384
1385         inbox[0] = cpu_to_be64(virt);
1386         inbox[1] = cpu_to_be64(dma_addr);
1387
1388         err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1389                         CMD_TIME_CLASS_B, status);
1390
1391         mthca_free_mailbox(dev, mailbox);
1392
1393         if (!err)
1394                 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1395                           (unsigned long long) dma_addr, (unsigned long long) virt);
1396
1397         return err;
1398 }
1399
1400 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count, u8 *status)
1401 {
1402         mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1403                   page_count, (unsigned long long) virt);
1404
1405         return mthca_cmd(dev, virt, page_count, 0, CMD_UNMAP_ICM, CMD_TIME_CLASS_B, status);
1406 }
1407
1408 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
1409 {
1410         return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1, status);
1411 }
1412
1413 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev, u8 *status)
1414 {
1415         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B, status);
1416 }
1417
1418 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages,
1419                        u8 *status)
1420 {
1421         int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0, 0, CMD_SET_ICM_SIZE,
1422                                 CMD_TIME_CLASS_A, status);
1423
1424         if (ret || status)
1425                 return ret;
1426
1427         /*
1428          * Arbel page size is always 4 KB; round up number of system
1429          * pages needed.
1430          */
1431         *aux_pages = (*aux_pages + (1 << (PAGE_SHIFT - 12)) - 1) >> (PAGE_SHIFT - 12);
1432
1433         return 0;
1434 }
1435
1436 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1437                     int mpt_index, u8 *status)
1438 {
1439         return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1440                          CMD_TIME_CLASS_B, status);
1441 }
1442
1443 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1444                     int mpt_index, u8 *status)
1445 {
1446         return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1447                              !mailbox, CMD_HW2SW_MPT,
1448                              CMD_TIME_CLASS_B, status);
1449 }
1450
1451 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1452                     int num_mtt, u8 *status)
1453 {
1454         return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1455                          CMD_TIME_CLASS_B, status);
1456 }
1457
1458 int mthca_SYNC_TPT(struct mthca_dev *dev, u8 *status)
1459 {
1460         return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B, status);
1461 }
1462
1463 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1464                  int eq_num, u8 *status)
1465 {
1466         mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1467                   unmap ? "Clearing" : "Setting",
1468                   (unsigned long long) event_mask, eq_num);
1469         return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1470                          0, CMD_MAP_EQ, CMD_TIME_CLASS_B, status);
1471 }
1472
1473 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1474                    int eq_num, u8 *status)
1475 {
1476         return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1477                          CMD_TIME_CLASS_A, status);
1478 }
1479
1480 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1481                    int eq_num, u8 *status)
1482 {
1483         return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1484                              CMD_HW2SW_EQ,
1485                              CMD_TIME_CLASS_A, status);
1486 }
1487
1488 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1489                    int cq_num, u8 *status)
1490 {
1491         return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1492                         CMD_TIME_CLASS_A, status);
1493 }
1494
1495 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1496                    int cq_num, u8 *status)
1497 {
1498         return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1499                              CMD_HW2SW_CQ,
1500                              CMD_TIME_CLASS_A, status);
1501 }
1502
1503 int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
1504                     int is_ee, struct mthca_mailbox *mailbox, u32 optmask,
1505                     u8 *status)
1506 {
1507         static const u16 op[] = {
1508                 [MTHCA_TRANS_RST2INIT]  = CMD_RST2INIT_QPEE,
1509                 [MTHCA_TRANS_INIT2INIT] = CMD_INIT2INIT_QPEE,
1510                 [MTHCA_TRANS_INIT2RTR]  = CMD_INIT2RTR_QPEE,
1511                 [MTHCA_TRANS_RTR2RTS]   = CMD_RTR2RTS_QPEE,
1512                 [MTHCA_TRANS_RTS2RTS]   = CMD_RTS2RTS_QPEE,
1513                 [MTHCA_TRANS_SQERR2RTS] = CMD_SQERR2RTS_QPEE,
1514                 [MTHCA_TRANS_ANY2ERR]   = CMD_2ERR_QPEE,
1515                 [MTHCA_TRANS_RTS2SQD]   = CMD_RTS2SQD_QPEE,
1516                 [MTHCA_TRANS_SQD2SQD]   = CMD_SQD2SQD_QPEE,
1517                 [MTHCA_TRANS_SQD2RTS]   = CMD_SQD2RTS_QPEE,
1518                 [MTHCA_TRANS_ANY2RST]   = CMD_ERR2RST_QPEE
1519         };
1520         u8 op_mod = 0;
1521         int my_mailbox = 0;
1522         int err;
1523
1524         if (trans < 0 || trans >= ARRAY_SIZE(op))
1525                 return -EINVAL;
1526
1527         if (trans == MTHCA_TRANS_ANY2RST) {
1528                 op_mod = 3;     /* don't write outbox, any->reset */
1529
1530                 /* For debugging */
1531                 if (!mailbox) {
1532                         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1533                         if (!IS_ERR(mailbox)) {
1534                                 my_mailbox = 1;
1535                                 op_mod     = 2; /* write outbox, any->reset */
1536                         } else
1537                                 mailbox = NULL;
1538                 }
1539         } else {
1540                 if (0) {
1541                         int i;
1542                         mthca_dbg(dev, "Dumping QP context:\n");
1543                         printk("  opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1544                         for (i = 0; i < 0x100 / 4; ++i) {
1545                                 if (i % 8 == 0)
1546                                         printk("  [%02x] ", i * 4);
1547                                 printk(" %08x",
1548                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1549                                 if ((i + 1) % 8 == 0)
1550                                         printk("\n");
1551                         }
1552                 }
1553         }
1554
1555         if (trans == MTHCA_TRANS_ANY2RST) {
1556                 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1557                                     (!!is_ee << 24) | num, op_mod,
1558                                     op[trans], CMD_TIME_CLASS_C, status);
1559
1560                 if (0 && mailbox) {
1561                         int i;
1562                         mthca_dbg(dev, "Dumping QP context:\n");
1563                         printk(" %08x\n", be32_to_cpup(mailbox->buf));
1564                         for (i = 0; i < 0x100 / 4; ++i) {
1565                                 if (i % 8 == 0)
1566                                         printk("[%02x] ", i * 4);
1567                                 printk(" %08x",
1568                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1569                                 if ((i + 1) % 8 == 0)
1570                                         printk("\n");
1571                         }
1572                 }
1573
1574         } else
1575                 err = mthca_cmd(dev, mailbox->dma, (!!is_ee << 24) | num,
1576                                 op_mod, op[trans], CMD_TIME_CLASS_C, status);
1577
1578         if (my_mailbox)
1579                 mthca_free_mailbox(dev, mailbox);
1580
1581         return err;
1582 }
1583
1584 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1585                    struct mthca_mailbox *mailbox, u8 *status)
1586 {
1587         return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1588                              CMD_QUERY_QPEE, CMD_TIME_CLASS_A, status);
1589 }
1590
1591 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn,
1592                           u8 *status)
1593 {
1594         u8 op_mod;
1595
1596         switch (type) {
1597         case IB_QPT_SMI:
1598                 op_mod = 0;
1599                 break;
1600         case IB_QPT_GSI:
1601                 op_mod = 1;
1602                 break;
1603         case IB_QPT_RAW_IPV6:
1604                 op_mod = 2;
1605                 break;
1606         case IB_QPT_RAW_ETY:
1607                 op_mod = 3;
1608                 break;
1609         default:
1610                 return -EINVAL;
1611         }
1612
1613         return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1614                          CMD_TIME_CLASS_B, status);
1615 }
1616
1617 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1618                   int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1619                   void *in_mad, void *response_mad, u8 *status)
1620 {
1621         struct mthca_mailbox *inmailbox, *outmailbox;
1622         void *inbox;
1623         int err;
1624         u32 in_modifier = port;
1625         u8 op_modifier = 0;
1626
1627 #define MAD_IFC_BOX_SIZE      0x400
1628 #define MAD_IFC_MY_QPN_OFFSET 0x100
1629 #define MAD_IFC_RQPN_OFFSET   0x104
1630 #define MAD_IFC_SL_OFFSET     0x108
1631 #define MAD_IFC_G_PATH_OFFSET 0x109
1632 #define MAD_IFC_RLID_OFFSET   0x10a
1633 #define MAD_IFC_PKEY_OFFSET   0x10e
1634 #define MAD_IFC_GRH_OFFSET    0x140
1635
1636         inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1637         if (IS_ERR(inmailbox))
1638                 return PTR_ERR(inmailbox);
1639         inbox = inmailbox->buf;
1640
1641         outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1642         if (IS_ERR(outmailbox)) {
1643                 mthca_free_mailbox(dev, inmailbox);
1644                 return PTR_ERR(outmailbox);
1645         }
1646
1647         memcpy(inbox, in_mad, 256);
1648
1649         /*
1650          * Key check traps can't be generated unless we have in_wc to
1651          * tell us where to send the trap.
1652          */
1653         if (ignore_mkey || !in_wc)
1654                 op_modifier |= 0x1;
1655         if (ignore_bkey || !in_wc)
1656                 op_modifier |= 0x2;
1657
1658         if (in_wc) {
1659                 u8 val;
1660
1661                 memset(inbox + 256, 0, 256);
1662
1663                 MTHCA_PUT(inbox, in_wc->qp_num,     MAD_IFC_MY_QPN_OFFSET);
1664                 MTHCA_PUT(inbox, in_wc->src_qp,     MAD_IFC_RQPN_OFFSET);
1665
1666                 val = in_wc->sl << 4;
1667                 MTHCA_PUT(inbox, val,               MAD_IFC_SL_OFFSET);
1668
1669                 val = in_wc->dlid_path_bits |
1670                         (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1671                 MTHCA_PUT(inbox, val,               MAD_IFC_GRH_OFFSET);
1672
1673                 MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
1674                 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1675
1676                 if (in_grh)
1677                         memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1678
1679                 op_modifier |= 0x10;
1680
1681                 in_modifier |= in_wc->slid << 16;
1682         }
1683
1684         err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1685                             in_modifier, op_modifier,
1686                             CMD_MAD_IFC, CMD_TIME_CLASS_C, status);
1687
1688         if (!err && !*status)
1689                 memcpy(response_mad, outmailbox->buf, 256);
1690
1691         mthca_free_mailbox(dev, inmailbox);
1692         mthca_free_mailbox(dev, outmailbox);
1693         return err;
1694 }
1695
1696 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1697                    struct mthca_mailbox *mailbox, u8 *status)
1698 {
1699         return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1700                              CMD_READ_MGM, CMD_TIME_CLASS_A, status);
1701 }
1702
1703 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1704                     struct mthca_mailbox *mailbox, u8 *status)
1705 {
1706         return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1707                          CMD_TIME_CLASS_A, status);
1708 }
1709
1710 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1711                     u16 *hash, u8 *status)
1712 {
1713         u64 imm;
1714         int err;
1715
1716         err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1717                             CMD_TIME_CLASS_A, status);
1718
1719         *hash = imm;
1720         return err;
1721 }
1722
1723 int mthca_NOP(struct mthca_dev *dev, u8 *status)
1724 {
1725         return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100), status);
1726 }